Scrolling on a Sanyo 20EZ

conrad

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Donor 6 years: 2020-2025
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I rewired the cabinet for my Donkey Kong. It had been converted to a switcher, and the cabling/harness was a rat's nest.

I previously recapped the monitor using APAR caps, and it was locked in.

I rewired the cabinet with a Mike's Arcade harness, using an original Nintendo PP-7B power supply. The voltage off the power supply tests 108 volts with no load, which should drop under load. I did some searches here and that seems fine. The B+ is 108.7 volts DC.

It's scrolling like crazy and I can't get it locked in. I'm wondering if it's the harness. I have a Dokert Harness I could try, but I'm trying to rule other variables out first. Any thoughts?

 
> that looks like video ground is missing.

Thanks. That points to the harness, or the harness connection. I'll check that out.

> something is getting lost in translation with your 5 adapters and harnesses

I don't have 5 harnesses and adapters: that was the point of rewiring the cabinet. I have one harness: https://www.mikesarcade.com/cgi-bin/store.pl?sku=NINHARNESS44P
 
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Got it! It was the harness. I swapped in a Dokert harness and now it's locked in again.

Thanks again, @mecha!

View attachment 853854
That's crazy you had trouble with mikes harness. Just used one for a scratch built dk junior and I couldn't be happier with the quality. Check the continuity on the mikes arcade harness for all the video wires, check the instructions on his site for a pin out of the edge connector. Are you sure you had the edge connector fully seated straight?
 
That's crazy you had trouble with mikes harness. Just used one for a scratch built dk junior and I couldn't be happier with the quality. Check the continuity on the mikes arcade harness for all the video wires, check the instructions on his site for a pin out of the edge connector. Are you sure you had the edge connector fully seated straight?
It was seated correctly, but I somehow pulled one of the pins. I didn't see that until I swapped the harnesses and went to put the Mike's Arcade harness away.

Meaning the harness was fine, and I messed it up.

Didn't mean to throw any shade at Mike, who is awesome. I just ordered a control panel harness from Mike because my old CP harness was also hacked up.'


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